#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
using namespace __gnu_pbds;
#define ordered_set tree<pair <ll,int> , null_type,less<pair <ll,int>>, rb_tree_tag,tree_order_statistics_node_update>
signed main(){
ios_base::sync_with_stdio();
cin.tie(0);cout.tie(0);
int n,p;
cin>>n;
vector <int> a(n);
for(int i=0;i<n;i++)cin>>a[i];
cin>>p;
ordered_set st;
ll sum=0;
ll ans=0,x=0;
for(int i=0;i<n;i++){
x=sum-(ll)(i*p);
st.insert({x,i});
sum+=(ll)a[i];
x=sum-(ll)(p*i)-p;
ans+=st.order_of_key({x,1e9});
}
cout<<ans<<"\n";
}
/*
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
860 KB |
Output is correct |
2 |
Correct |
4 ms |
604 KB |
Output is correct |
3 |
Correct |
2 ms |
604 KB |
Output is correct |
4 |
Incorrect |
583 ms |
64592 KB |
Output isn't correct |
5 |
Incorrect |
360 ms |
36820 KB |
Output isn't correct |
6 |
Incorrect |
526 ms |
57244 KB |
Output isn't correct |
7 |
Incorrect |
530 ms |
59732 KB |
Output isn't correct |
8 |
Incorrect |
475 ms |
51680 KB |
Output isn't correct |
9 |
Runtime error |
575 ms |
65536 KB |
Execution killed with signal 9 |
10 |
Incorrect |
539 ms |
58044 KB |
Output isn't correct |